I strive for pleasant transactions. Please check my profile. New Item: Futures Fins Compatible Performance Twin Fin MR Type Although the sizes are slightly different, these fins are designed with the FCS2 MR PC Tri Set MR’s twin + stabiliser twin fins made by FCS as a benchmark. With a design that features a moderate rake and rounded tips, these fins make it easy to perform tight turns and releases at the top of the wave, offering both the rough, loose feel of retro twins and the modern responsiveness. These are highly recommended fins. These fins are made with a honeycomb core. Honeycomb structures have a high void ratio and are lighter than general resin foams or plastics. High strength and rigidity: The collection of hexagonal cells provides superior compressive strength and durability compared to other materials of the same weight. The unique flexibility of the honeycomb core allows for more flex than fiberglass, achieving "medium flex" with excellent control and response. Because of the honeycomb structure, it absorbs impacts from multiple directions. Since the impact is not concentrated but dispersed, durability is improved. All-around performance: Lightweight with moderate flex, these fins are easy to use in a wide range of wave conditions, from beach breaks to reef breaks. ○ There may be slight scratches or color unevenness due to the manufacturing process. This is a great deal for those who don't mind. If the fins don't fit, sand the fin side. FCS2 and FUTURES boxes are made very tight like fins, so it may be difficult to insert new fins. I am also listing other items. ◎ Size: Twin Fin Height: Approximately 143mm Base: Approximately 123mm The box height is deep. ◎ There are two types of Futures Fin box heights: a deep one with an "f" mark on the box and a shallow one with an "x" mark. We cannot accept returns, exchanges, or claims due to incorrect fin box height. Please check your board before purchasing. Thank you for your understanding. ◎ The color may be slightly different from the actual product due to the resolution of the camera. Please understand.